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Abel, Sir Frederick Augustus

(Encyclopedia)Abel, Sir Frederick Augustus, 1826–1902, English chemist, an authority on explosives. He was professor of chemistry at the Royal Military Academy (1851–55) and chemist to the War Dept. and governm...

Brooke, Sir Charles Vyner

(Encyclopedia)Brooke, Sir Charles Vyner: see Brooke, Sir James. ...

Gates, Sir Thomas

(Encyclopedia)Gates, Sir Thomas, fl. 1585–1621, English colonial governor of Virginia. He was knighted for his services under the 2d earl of Essex in the successful expedition against Cádiz in 1596. Gates, who h...

Dyck, Sir Anthony van

(Encyclopedia)Dyck, Sir Anthony van: see Van Dyck, Sir Anthony. ...

sodium

(Encyclopedia)sodium, a metallic chemical element; symbol Na [Lat. natrium]; at. no. 11; at. wt. 22.98977; m.p. 97.81℃; b.p. 892.9℃; sp. gr. 0.971 at 20℃; valence +1. Sodium is a soft, silver-white metal. Ext...

boron

(Encyclopedia)boron bōrˈŏn [key] [New Gr. from borax], chemical element; symbol B; at. no. 5; interval in which at. wt. ranges 10.806–10.821; m.p. about 2,300℃; sublimation point about 2,550℃; sp. gr. 2.3 ...

Hooker, Sir Joseph Dalton

(Encyclopedia)Hooker, Sir Joseph Dalton: see under Hooker, Sir William Jackson. ...

Scott, Sir Giles Gilbert

(Encyclopedia)Scott, Sir Giles Gilbert: see under Scott, Sir George Gilbert. ...

Knolles, Sir Robert

(Encyclopedia)Knolles or Knollys, Sir Robert both: nōlz [key], d. 1407, English military commander in the Hundred Years War. He became a leader of a company of mercenaries, fought against Bertrand Du Guesclin, who...

Geikie, Sir Archibald

(Encyclopedia)Geikie, Sir Archibald gēˈkē [key], 1835–1924, British geologist, educated at the Univ. of Edinburgh. He joined the Geological Survey of Scotland, becoming its director in 1867. He was professor o...